Safety device for elevators.



O. J. COLE.

SAFETY DEVICE FOR ELEVATORS.

APPLIOATION FILED MAR. 25, 1911.

Patented Apr. 2, 1912.

2 SHEETS-SHEET 1.

COLUMBIA PLANOGRAPH 60.. WASHINGTON. D. c,

SAFETY DEVICE FOR ELEVATORS.

APPLICATION FILED MAR.25, 1011.

1,022,386. Patented Apr. 2, 1912.

2 SHBBTB-SHEET 2.

fly, a",

51mm ('aiyliz J (0/3 COLUMBIA PLANOORAPH COAVASHINOTON, n. c.

UNITED STATES PATENT OFFICE.

CALVIN J. COLE, OF JACKSONVILLE, FLORIDA.

SAFETY DEVICE FOR- ELEVATORS.

To all whom it may concern:

Be it known that I, CAININ J. Gone, a citizen of the United States,residing at Jacksonville, in the county of Duvall and State of Florida,have invented new and useful Improvements in Safety Devices forElevators, of which the following is a specification.

The invention relates to safety devices, and more particularly to theclass of safety devices for elevators.

The primary object of the invention is the provision of a device of thischaracter in which an elevator cage or car will be retarded in itsdownward progress on the breaking of its lifting cable.

Another object of the invention is the provision of a device of thischaracter in which the elevator cage or car may be locked in the shaftor well to avoid the possibility of the dropping thereof, should thelifting mechanism become broken or its lifting cable severed, thusobviating the possibility of injury to the passengers or freight uponthe car.

A further object of the invention is the provision of a device of thischaracter which is simple of construction, thoroughly reliable andeflicient in operation, and inexpensive in manufacture. I

With these and other objects in view, the invention consists in theconstruction, combination and arrangement of parts, as will behereinafter more fully described, illustrated in the accompanyingdrawings, and pointed out in the claims hereunto appended.

In the drawings: Figure 1 is a vertical sectional view of an elevatorshaft or well and car with the invention applied thereto. Fig. 2 is asectional view on the line 2-2 of Fig. 1. Fig. 3 is an enlarged sideview of the stop mechanism, the same being partly in sect-ion. Fig. 4 isan end elevation thereof.

Similar reference characters indicate corresponding parts throughout theseveral views of the drawings.

Referring to the drawings by numerals, 5 designates an elevator shaft orwell, which is of the ordinary well-known construction, having the usualvertical guide tracks at opposite sides thereof, only one of which isshown and indicated at 6, on which travels an elevator cage or car 7 ofthe ordinary well-known construction, and is raised and lowered withinthe well or shaft by means Specification of Letters Patent.

Application filed March 25, 1911.

Patented Apr. 2, 1912.

Serial No. 616,899.

of the usual lifting cable, the same being operated by suitablemechanism (not shown). The car, at opposite sides thereof, is providedwith the usual vertical posts, one only being shown and alining with thetrack (3, and on which is mounted a channeled beam S) engaging thelatter for guiding the car or cage in its ascending and descendingmovements as usual. Suitably fixed in the well 5, adjacent to the track(1, are outwardly projecting lugs or pins 10, the same being disposed invertical alinen'lent and spaced from each other throughout the length ofsaid track for engagement by the safety device, as will be hereinaftermore fully described.

The safety device comprises rotatable shafts 11 and 12, respectively,the same being mounted transversely and in spaced relation to each otherin a bearing bracket 13 fixed exterior-1y to one side wall of the car orcage 7, the inner ends of the shafts 11 and 12 being passed through theside wall of the car or cage and journaled in a hearing plate 14, whichis suitably fixed to the cage or car at the inner face of its side wall.The shaft 11 projects outwardly beyond the bracket 13, and has looselymounted thereon a catch member, including a hub or sleeve 15 providedwith a hook extension 16, the same being adapted for engagen'ient withthe lugs or pins 110, in a manner as will be hereinafter more fullydescribed.

Fixed, in any desirable manner to the hub 15 of the catch member, is oneend of a coiled tensioning spring 17, the latter surrounding the shaft11 and having its opposite end fixed to a head 18 formed on the free endof the said shaft 11, the spring 17 being adapted to normally hold thehook 15 of the catch member in retracted position away from the lugs orpins 10, and against a stop stud 19 fixed in the bracket 13, butuponturning of the shaft 11 in one direction, the hook 16 of the catchmember will be drawn into the path of the pins or meshing gears 21,whereby the same may be rotated in unison in reverse direction to eachother, the shaft 12 having connected thereto the usual crank handle 22which permits the manual turning of the shaft 12, so that its motionwill be imparted to the shaft 11 for shifting the catch member intopositive engagement with the lugs or pins 10, contiguous to the trackson which the elevator cage or car travels. It is of course understoodthat the catch member, when the shafts l1 and 12 are rotated, will beheld under tension through the medium of the spring 17 acting directlyupon the said catch member.

It is clearly apparent that the safety device will be under the controlof the operator in the cage or car. On the breaking of the lifting cableconnected to the car or cage 7, the latter will be caused to drop in thewell or shaft, whereupon the operator of the car instantly actuates thesafety device, so that on the turning of the handle 22 thereof, thecatch member will be thrown into the path of the lugs or pins 10,contiguous to the track 6, and as the car is descending with greatvelocity, the hook 16 of the catch member will momentarily engage withthe lugs or pins 10 and successively trip thereover during the downwardtravel of the car, and in this manner the latter will be graduallyretarded, reducing the velocity of movement thereof, so that said carwill reach the bottom of the shaft, without any appreciable shock orjar, thereby avoiding injury to the same or its load.

What is claimed is:

1. The combination with a guide-way in a shaft or well, of a pluralityof spaced lugs mounted contiguous to the same in vertical alinement witheach other, a movable car adapted to travel upon said guide-Way, a

bracket projecting laterally from one side of the car, a rotatable shaftjournaled in the bracket and the adjacent side wall of the car, a catchmounted upon the shaft and adapted for engagement with the lugs, a

spring having connection with the shaft and the said catch forsustaining the latter under tension, a stop pin carried by the bracketand projected into the path of movement of the catch member to limit itsmovement in one direction, and hand controlled gear connections with theshaft for rotating the same, whereby the catch will be moved intoposition for successive engagement with the lugs.

2. The combination with a guide-way in a shaft or well, of a pluralityof spaced lugs mounted contiguous to the same in vertical alinement witheach other, a movable car adapted to travel upon said guide-way, abracket projecting laterally from one side of the car, a rotatable shaftjournaled in the bracket and the adjacent side wall of the car, a catchmounted upon the shaft and adapted for engagement with the lugs, aspring having connection with the shaft and the said catch forsustaining the latter under tension, a stop pin carried by'the bracketCALVIN J. COLE.

Witnesses Gr. H. HODGES, AUGUST BUESING.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents. Washington, D. C.

